I know this isn't going to make sense to you, Ix: In my (normally aspirated) Bonanza, I set full throttle at the start of the take off roll and didn't touch the throttle again until joining the circuit at the destination. A bit of fiddling with the RPM after take off then reaching cruise, to produce a nice sounding and feeling engine. Mixture was the important control. (Google "WOTLOP".)
As matter of interest, how many hours do you have in aircraft with the kinds of engines fitted to and the performance of say a Bonanza or a Cessna 210?